I had to prevent Drupal from deleting a node and instead run my own functions to act on "delete" operation. I used the form_alter hook and removed the delete button and added my own button called Remove. This don't prevent users from calling the node/[nid]/delete, you have to set that in the permissions instead.
This is how to clear form cache when other parameters don't work. I'm using it when clear Drupals cache on AHAH forms.
<?php
cache_clear_all('form_'. $_POST['form_build_id'], 'cache_form');
?>This is how you can clear specific data from the Drupal cache. I use this when I by background process change data to CCK fields and want to make sure that the values are correct in the form for the user. The cache is otherwise stored in 6 hours for the form, specified in includes/form.inc.
<?php
/**
* Delete node data cache used for forms etc.
*
* @param unknown_type $nid
*/
function _clear_node_cache($nid, $vid = FALSE) {
if(!$vid){
$vid = $nid;
}
db_query("DELETE FROM cache_content WHERE cid = 'content:%d:%d';", $nid, $vid);
}
?>In order to rebuild the menu in Drupal 6 you have to go to admin/build/modules, but you don't have to submit it.
In Drupal 5 you just need to empty the cache table by TRUNCATE cache_menu;